need to write shared memory allocator for c++ std::vector

问题

Please help to write c++ allocator for std::vector< nIcon*> class.

All examples i find shows just what methods i need to overwrite, not code examples.

I need to implement allocator using shared memory on windows (using CreateFileMapping and MapViewOfFile)

回答1:

May I suggest you look at the boost interprocess library? It allows you to create allocators using shared memory.

I've seen some examples around, I would say just look a bit more. I agree that none of them do a perfect job, thus I won't recommend any in particular. Though beyond just implementing the small set of functions there is really nothing to it (provided you don't need to implement one for map).

回答2:

You would use:

std::vector< nicon *, MyAllocator >

For how you would write MyAllocator

来源：https://stackoverflow.com/questions/5312714/need-to-write-shared-memory-allocator-for-c-stdvector